Float sludge treatment device for sewage plant

Abstract

The invention discloses a float sludge treatment device for a sewage plant, and belongs to the technical field of sewage treatment. The float sludge treatment device for the sewage plant comprises a driving motor, the output end of the driving motor is fixedly connected with a self-cleaning scraping plate, an aeration mechanism is arranged on the surface of one side of the self-cleaning scraping plate, and a suction rotating shaft is arranged on the surface of one side of the self-cleaning scraping plate. Through the integral limiting and self-cleaning design of the self-cleaning scraping plate, dirt on the inner wall of the scraping plate is automatically removed through reciprocating motion of the cleaning rod assembly, a mud scraping channel is kept unblocked continuously, and the manual maintenance cost is reduced; through the dynamic extrusion aeration design of the aeration mechanism, an aeration bin and an air supply system are linked to form unpowered aeration circulation by utilizing periodic compression on an extrusion block when a scraper rotates, and the unpowered aeration circulation is cooperated with the sludge scraping process of the scraper; an air flow one-way conduction barrier is constructed in the aeration system through the air passage one-way valve, so that sewage is prevented from flowing backwards in the aeration process, and the cleanness of an air passage and the stability of the aeration function are guaranteed from the system level.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, in particular to a floating sludge treatment device for a sewage plant. Background Art

[0002] During the operation of sewage treatment plants, the treatment of floating sludge is an important and challenging issue. Taking the common activated sludge sewage treatment plant as an example, during the biochemical treatment process, due to various reasons such as water quality fluctuations, sludge aging, untimely sludge discharge, growth of filamentous bacteria and uneven water flow, floating sludge is often produced in sewage treatment tanks, especially in anaerobic sections, anoxic sections and secondary sedimentation tanks. These floating sludges accumulate on the water surface, which will bring many adverse effects. The floating sludge will prevent oxygen in the air from entering the biochemical tank, inhibit the growth of activated sludge in the tank, and thus affect the effluent quality of the water plant, making it difficult for the effluent to meet the standards.

[0003] Chinese patent CN119038686B, which was authorized and announced on January 28, 2025, discloses a sewage treatment pool floating sludge collection device. By forming a water flow circulation from the middle position to the edge of the pool at the height of the sewage pool water surface, on the one hand, the floating sludge located in the middle position is transported to the edge of the pool for collection, and on the other hand, the sludge settled at the bottom of the pool will not be disturbed, causing secondary turbidity of the pool water, thereby improving the efficiency of floating sludge removal; however, the sewage treatment pool floating sludge collection device requires regular cleaning of the lifting device to avoid interference of the floating sludge adhesion on the floating sludge treatment, and the efficiency is not high enough, affecting the consistency of the treatment of the floating sludge in the sewage pool. Summary of the Invention

[0004] The object of the present invention is to provide a floating sludge treatment device for a sewage treatment plant to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a sewage treatment plant floating sludge treatment device, comprising a drive motor, a mounting bracket provided on the lower surface of the drive motor, a sewage pool provided on the lower surface of the mounting bracket, a self-cleaning scraper fixedly connected to the output end of the drive motor, an aeration mechanism provided on one side surface of the self-cleaning scraper, and a suction shaft provided on one side surface of the self-cleaning scraper;

[0006] The self-cleaning scraper includes a floating mud scraper installed on the outer wall of one end of the mounting frame, the floating mud scraper is fixedly connected to a limiting slider in the direction close to the inner wall of the sewage tank, a limiting slide groove adapted to the limiting slide groove is provided on the inner wall of the sewage tank, the limiting slide groove is slidingly connected to the one side surface of the sewage tank through the limiting slide groove, the inner wall surface of the floating mud scraper is slidingly connected to a driving rod, the outer surface of the driving rod is fixedly connected to a cleaning reset spring, one side surface of the driving rod is fixedly connected to a cleaning rod, the side surface of the cleaning rod close to the driving rod is fitted with a reset base, and the outer surface of the cleaning rod is fixedly connected to a cleaning scraper.

[0007] Furthermore, the aeration mechanism includes an extrusion block, which is attached to the lower surface of the floating mud scraper, and one side surface of the extrusion block is slidably connected to an aeration bin, and the aeration bin is fixedly connected to the inner wall surface of the sewage pool, and the lower surface of the extrusion block is fixedly connected to an aeration return spring, and the inner wall surface of the extrusion block is fixedly connected to an air supply pipe, an air supply port is provided on one side surface of the sewage pool, and an aeration pipe is fixedly connected to one side surface of the aeration bin, and an air supply bin adapted to the air supply port is provided on the outer wall of the sewage pool.

[0008] Furthermore, an airway one-way valve is provided on the inner wall surface of the air supply port, and the airway one-way valve includes a valve pipe, and a sealing ring is fixedly connected to the inner wall surface of the valve pipe, and a sealing block is attached to one side surface of the sealing ring, and a one-way return spring is fixedly connected to the side surface of the sealing block away from the sealing ring, and a sealing base is fixedly connected to the inner wall surface of the valve pipe.

[0009] Furthermore, the suction shaft includes a sealing sleeve, the sealing sleeve is fixedly connected to the bottom surface of the floating mud scraper, one side surface of the sealing sleeve is rotatably connected to the suction bin, the output shaft of the drive motor is fixedly connected to the drive shaft, the lower surface of the drive shaft is fixedly connected to the conversion shaft, one side surface of the conversion shaft is slidably connected to a reciprocating rod, one side surface of the reciprocating rod is fixedly connected to a water filter block, the lower surface of the water filter block is fixedly connected to an adsorption block, and the lower surface of the adsorption block is fixedly connected There is a filter pressure block, the inner wall surface of the water filter block is fixedly connected with a mounting ring, the inner wall surface of the mounting ring is fixedly connected with a fixed rotating shaft, the outer surface of the fixed rotating shaft is fitted with a reset torsion spring, and a closing plate adapted to the reset torsion spring is provided on the outer wall of the fixed rotating shaft. A suction groove is provided on the inner wall of the suction bin, a sealing reed is fixedly connected to the outer wall of one end of the suction groove, and a sealing groove plate adapted to the suction groove is fixedly connected to one side surface of the sealing reed, and an electric valve is fixedly connected to the lower surface of the suction bin.

[0010] Furthermore, the outer surface of the cleaning blade is hollowed out, and the cleaning blades are arranged in multiple groups at equal intervals on the outer surface of the cleaning rod.

[0011] Furthermore, the cleaning scraper forms a linkage cleaning device with the air supply port and the sewage pool through the cleaning rod, the cleaning return spring and the driving rod, and the cross-section of one side of the floating mud scraper is in a "concave" shape.

[0012] Furthermore, the floating mud scrapers are symmetrically arranged in three groups around the central axis of the driving motor, and the extrusion blocks are symmetrically arranged in six groups around the central axis of the driving motor.

[0013] Furthermore, aeration holes are provided on one side surface of the aeration tube, and a plurality of aeration holes are provided on the outer surface of the aeration tube at equal intervals.

[0014] Furthermore, the airway one-way valve is arranged on the inner wall surface of the air supply port and the aeration pipe, and the sealing block is fixedly connected to the inner wall surface of the valve pipe through a one-way return spring and a sealing base.

[0015] Furthermore, the closing plate forms a one-way sealing device through a reset torsion spring and a mounting ring. Six groups of the one-way sealing devices are symmetrically arranged around the central axis of the water filter block, and a drainage hole is provided on one side surface of the suction bin.

[0016] The difference from the prior art is that the beneficial effect of the present application is that: the floating mud treatment device of the sewage plant,

[0017] 1. The self-cleaning scraper's integral limit and self-cleaning design utilizes the sliding cooperation between the limit slider and the sewage pool to constrain the scraper's rotation trajectory, preventing the long scraper from deformation and breakage due to centrifugal force. At the same time, the reciprocating motion of the cleaning rod assembly automatically removes dirt from the scraper's inner wall, keeping the scraping channel continuously unobstructed and reducing manual maintenance costs.

[0018] 2. The dynamic extrusion aeration design of the aeration mechanism utilizes the periodic pressure on the extrusion block when the scraper rotates, linking the aeration bin and the air supply system to form an unpowered aeration cycle. Air is continuously injected into the sewage to promote the floating sludge to float. This improves the floating sludge aggregation efficiency without the need for additional aeration equipment, forming a synergistic effect with the scraper sludge scraping process.

[0019] 3. The one-way airflow control structure of the airway check valve creates a one-way airflow barrier in the aeration system to prevent sewage backflow caused by negative pressure during aeration or air replenishment. This ensures airway cleanliness and aeration function stability at the system level, thus avoiding equipment failure.

[0020] 4. Through the integrated solid-liquid separation design of the suction shaft, the reciprocating motion component is used to mechanically squeeze the sucked mud-water mixture, and the one-way sealing mechanism is used to achieve sewage filtration and return flow and directional discharge of floating mud. The mixed liquid after scraping the mud is automatically separated into solids and liquids and the floating mud is collected, forming a fully automated process of "scraping mud - aeration - separation - discharge", which significantly improves the consistency and efficiency of floating mud treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the appearance structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the sewage pool of the present invention;

[0023] Figure 3 This is a schematic cross-sectional structural diagram of the extrusion block of the present invention;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the airway one-way valve of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the self-cleaning scraper, aeration mechanism and suction shaft cooperating with each other in the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the water filter block and the sealing plate cooperating with each other in the present invention;

[0027] Figure 7 For the present invention Figure 5 A in the middle is an enlarged structural diagram;

[0028] Figure 8 This is a schematic diagram of the structure of the suction bin and the suction groove cooperating with each other in the present invention;

[0029] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B in the middle.

[0030] In the figure: 1. driving motor; 2. mounting frame; 3. sewage tank; 4. self-cleaning scraper; 401. limit slider; 402. floating mud scraper; 403. driving rod; 404. cleaning reset spring; 405. cleaning rod; 406. reset base; 407. cleaning scraper; 5. aeration mechanism; 501. extrusion block; 502. aeration chamber; 503. aeration reset spring; 504. air supply pipe; 505. air supply port; 506. aeration pipe; 507. air supply chamber; 6. airway check valve; 601. valve pipe; 602. 02. Sealing ring; 603. Sealing block; 604. One-way return spring; 605. Sealing base; 7. Suction shaft; 701. Sealing housing; 702. Suction bin; 703. Driving shaft; 704. Conversion shaft; 705. Reciprocating rod; 706. Water filter block; 707. Adsorption block; 708. Filter pressure block; 709. Mounting ring; 710. Fixed shaft; 711. Return torsion spring; 712. Closing plate; 713. Suction groove; 714. Sealing reed; 715. Sealing groove plate; 716. Electric valve. DETAILED DESCRIPTION

[0031] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] Example 1

[0034] See also Figures 1-9 The present invention provides a technical solution: comprising a driving motor 1, a mounting frame 2 is provided on the lower surface of the driving motor 1, a sewage pool 3 is provided on the lower surface of the mounting frame 2, a self-cleaning scraper 4 is fixedly connected to the output end of the driving motor 1, an aeration mechanism 5 is provided on one side surface of the self-cleaning scraper 4, and a suction shaft 7 is provided on one side surface of the self-cleaning scraper 4;

[0035] The self-cleaning scraper 4 includes a floating mud scraper 402 installed on the outer wall of one end of the mounting frame 2. The floating mud scraper 402 is fixedly connected to a limiting slider 401 in the direction close to the inner wall of the sewage tank 3. A limiting slide groove adapted to the limiting slider 401 is provided on the inner wall of the sewage tank 3. The limiting slider 401 is slidingly connected to the side surface of the sewage tank 3 through the limiting slide groove. The inner wall surface of the floating mud scraper 402 is slidingly connected to a driving rod 403. The outer surface of the driving rod 403 is fixedly connected to a cleaning reset spring 404. A cleaning rod 405 is fixedly connected to one side surface of the driving rod 403. A reset base 406 is attached to the side surface of the cleaning rod 405 close to the driving rod 403. A cleaning scraper 407 is fixedly connected to the outer surface of the cleaning rod 405.

[0036] When in use, the power is connected to the inside of the device, and the driving motor 1 is started. The driving motor 1 drives the mud scraper 402 in the self-cleaning scraper 4 to rotate, and then drives the limiting slider 401 fixedly connected to the surface of one side of the mud scraper 402 to slide along the limiting slide groove provided on the inner wall of the sewage pool 3, thereby limiting the mud scraper 402, and preventing the mud scraper 402 from bending due to the centrifugal force during the rotation process caused by the excessive length of the mud scraper 402, and then breaking the mud scraper 402. During the rotation process, the porous surface of one side of the mud scraper 402 absorbs the mud on the surface of the sewage pool 3. At this time, the driving rod 403 rotates under the limiting action of the air supply port 505 on the water pool wall, thereby driving the driving rod 403 and the cleaning The cleaning rod 405 slides along the inner wall surface of the floating mud scraper 402, thereby driving the cleaning blade 407 fixedly connected to the outer surface of the cleaning rod 405 to slide along the inner wall surface of the floating mud scraper 402. On the one hand, the inner wall surface of the floating mud scraper 402 is descaled. On the other hand, the hollow shape of the cleaning blade 407 facilitates the circulation of water in the sewage and the suction of solid floating mud. After a single descaling and cleaning is completed, the cleaning reset spring 404 attached to the surface of one side of the reset base 406 releases its elastic potential energy. At the same time, the driving rod 403 damps the cleaning reset spring 404, driving the driving rod 403 to achieve a reset effect, preparing for the next descaling.

[0037] See also Figure 2 、 Figure 3 and Figure 5 As shown in the figure, the aeration mechanism 5 includes an extrusion block 501, which is attached to the lower surface of the floating mud scraper 402. One side surface of the extrusion block 501 is slidably connected to the aeration bin 502, and the aeration bin 502 is fixedly connected to the inner wall surface of the sewage pool 3. The lower surface of the extrusion block 501 is fixedly connected to the aeration return spring 503, and the inner wall surface of the extrusion block 501 is fixedly connected to the air supply pipe 504. An air supply port 505 is provided on one side surface of the sewage pool 3, and an aeration pipe 506 is fixedly connected to one side surface of the aeration bin 502. An air supply bin 507 adapted to the air supply port 505 is provided on the outer wall of the sewage pool 3.

[0038] During use, the floating mud scraper 402 in the self-cleaning scraper 4 slides along the curved surface of one side surface of the squeezing block 501 in the aeration mechanism 5 during the rotation process, and the squeezing block 501 is pressed under the action of the limiting slide groove and the limiting slider 401. The squeezing block 501 slides along the surface of one side of the aeration bin 502 and the sewage pool 3, forcing the gas in the aeration bin 502 to be squeezed out along the multiple groups of holes opened on the surface of one side of the aeration pipe 506, aerating the sewage in the sewage pool 3, promoting the separation of floating mud and water in the sewage pool 3, and the floating mud floating on the water surface, which is convenient for the scraping and suction of the floating mud scraper 402. After the initial aeration is completed, the aeration return spring 503 pushes the squeezing The block 501 slides along the inner wall surface of the aeration bin 502 to achieve the reset of the extrusion block 501. After the reset is completed, due to the action of the airway one-way valve 6, the air supply pipe 504 fixedly connected to the inner wall surface of the extrusion block 501 coincides with the air supply port 505 opened on the inner wall surface of the sewage pool 3. After the action of the airway one-way valve 6 again, the air inside the air supply bin 507 replenishes the air pressure of the aeration bin 502 to complete a single cycle of the aeration process. Under the interaction of the three groups of floating mud scrapers 402 and the six groups of extrusion blocks 501, in actual work, the three groups of extrusion blocks 501 are inflated at the same time, and the three groups of extrusion blocks 501 aerate the aeration pipe 506 at the same time. A continuous working state is achieved.

[0039] See also Figure 3 and Figure 4 As shown in the figure, the inner wall surface of the air supply port 505 is provided with an airway one-way valve 6, and the airway one-way valve 6 includes a valve pipe 601. The inner wall surface of the valve pipe 601 is fixedly connected with a sealing ring 602, and one side surface of the sealing ring 602 is affixed with a sealing block 603. The side surface of the sealing block 603 away from the sealing ring 602 is fixedly connected with a one-way return spring 604, and one side surface of the one-way return spring 604 is fixedly connected with a sealing base 605. The sealing base 605 is fixedly connected to the inner wall surface of the valve pipe 601.

[0040] When in use, during the aeration and inflation process, the airflow pushes the sealing block 603 to slide along the side surface of the sealing ring 602. At this time, the sealing ring 602 releases the limiting effect on the sealing block 603, and the sealing block 603 presses the one-way return spring 604. The one-way return spring 604 is restricted by the sealing base 605. At this time, the airway check valve 6 forms a complete and unobstructed airway, which is convenient for the air in the aeration chamber 502 to enter the aeration pipe 506, aerating the pool water, and facilitating the replenishment of the air chamber 50 The gas in 7 passes through the airway one-way valve 6 and the air supply port 505 fixedly connected to the inner wall surface of the extrusion block 501 and the air supply pipe 504 to inflate and pressure the inside of the aeration bin 502. When the aeration or inflation is completed, the water flow or air flow pushes the sealing block 603 in the reverse direction. At the same time, under the reset action of the one-way return spring 604, the sealing block 603 fits tightly with the sealing ring 602, realizing one-way airway unblocking and reverse airway closure, preventing the backflow of sewage caused by negative pressure from damaging the device.

[0041] See also Figure 5 、 Figure 6 、 Figure 8 and Figure 9 As shown in the figure, the suction shaft 7 includes a sealing shell 701, which is fixedly connected to the bottom surface of the floating mud scraper 402. One side surface of the sealing shell 701 is rotatably connected to the suction bin 702. The output shaft of the drive motor 1 is fixedly connected to the drive shaft 703. The lower surface of the drive shaft 703 is fixedly connected to the conversion shaft 704. The one side surface of the conversion shaft 704 is slidably connected to the reciprocating rod 705. The one side surface of the reciprocating rod 705 is fixedly connected to the water filter block 706. The lower surface of the water filter block 706 is fixedly connected to the adsorption block 707. The lower surface of the adsorption block 707 is fixedly connected to the filter pressure block 708. The inner wall surface of the water filter block 706 is fixedly connected with a mounting ring 709, the inner wall surface of the mounting ring 709 is fixedly connected with a fixed rotating shaft 710, the outer surface of the fixed rotating shaft 710 is fitted with a reset torsion spring 711, and the outer wall of the fixed rotating shaft 710 is provided with a closing plate 712 adapted to the reset torsion spring 711. A suction groove 713 is provided on the inner wall of the suction bin 702, and a sealing reed 714 is fixedly connected to the outer wall of one end of the suction groove 713. A sealing groove plate 715 adapted to the suction groove 713 is fixedly connected to the one side surface of the sealing reed 714. An electric valve 716 is fixedly connected to the lower surface of the suction bin 702.

[0042] During use, after the floating mud in the sewage pool 3 is acted upon by the self-cleaning scraper 4, the floating mud and water are mixed and sucked into the inner wall surface of the sealing shell 701, and are adsorbed by the suction groove 713 opened on one side surface of the suction bin 702, and enter the inner wall surface of the suction bin 702. At this time, the mud-water mixture pushes the sealing groove plate 715, and the sealing groove plate 715 forms an angle with the side surface of the suction groove 713, and the mud-water mixture enters the interior of the suction bin 702. When the suction is completed, the sealing reed 714 releases the elastic spring. The potential energy pushes the sealing groove plate 715 to seal the suction groove 713 to prevent backflow. At the same time, the driving motor 1 drives the driving shaft 703 to rotate, and the driving shaft 703 rotates to drive the conversion shaft 704 to rotate. The outer surface of the conversion shaft 704 is provided with a track to limit the reciprocating rod 705, thereby driving the reciprocating rod 705 to reciprocate like a piston along the inner wall surface of the suction bin 702, thereby pushing the water filter block 706 fixedly connected to the surface of one side of the reciprocating rod 705, the adsorption The block 707 and the filter pressing block 708 squeeze the mud-water mixture inside the suction bin 702, the water-soluble impurities are adsorbed by the adsorption block 707, and the sewage passes through the filter block 706. The sewage pushes the two sets of semicircular closing plates 712. The closing plates 712 are limited by the mounting ring 709 and the fixed shaft 710 and rotate along the central axis of the fixed shaft 710. The closing plates 712 pull the reset torsion spring 711, and the reset torsion spring 711 accumulates elastic potential energy. After the sewage passes through, the reset torsion spring 711 is released. The spring 711 releases elastic potential energy, pulling the two sets of closing plates 712 to rotate. The closing plates 712 interact with the water filter block 706 and the mounting ring 709 to realize the function of a one-way channel, thereby preventing sewage from flowing back under the action of gravity. The sewage returns to the sewage tank 3 along the drainage hole opened on one side of the suction chamber 702. After the floating mud is processed by the filter pressing block 708, the electric valve 716 is opened, and the floating mud is discharged from the suction chamber 702 along the electric valve 716, thereby realizing the processing of the floating mud in the mud-water mixture in the sewage tank 3.

[0043] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A sewage treatment plant floating mud treatment device, comprising a drive motor (1), characterized in that: A mounting frame (2) is provided on the lower surface of the driving motor (1), a sewage pool (3) is provided on the lower surface of the mounting frame (2), a self-cleaning scraper (4) is fixedly connected to the output end of the driving motor (1), an aeration mechanism (5) is provided on one side surface of the self-cleaning scraper (4), and a suction shaft (7) is provided on one side surface of the self-cleaning scraper (4); The self-cleaning scraper (4) comprises a floating mud scraper (402) mounted on the outer wall of one end of the mounting frame (2); the floating mud scraper (402) is fixedly connected to a limiting slider (401) in a direction close to one side of the inner wall of the sewage tank (3); a limiting chute adapted for the limiting slider (401) is provided on the inner wall of the sewage tank (3); the limiting slider (401) is slidably connected to a side surface of the sewage tank (3) via the limiting chute; the inner wall surface of the floating mud scraper (402) is slidably connected to a driving rod (403); the outer surface of the driving rod (403) is fixedly connected to a cleaning reset spring (404); a side surface of the driving rod (403) is fixedly connected to a cleaning rod (405); a side surface of the cleaning rod (405) close to the driving rod (403) is affixed to a reset base (406); and the outer surface of the cleaning rod (405) is fixedly connected to a cleaning scraper (407).

2. The floating sludge treatment device for a sewage treatment plant according to claim 1, characterized in that: The aeration mechanism (5) comprises an extrusion block (501), the extrusion block (501) being attached to the lower surface of the floating mud scraper (402), an aeration bin (502) being slidably connected to one side surface of the extrusion block (501), the aeration bin (502) being fixedly connected to the inner wall surface of the sewage pool (3), an aeration return spring (503) being fixedly connected to the lower surface of the extrusion block (501), an air supply pipe (504) being fixedly connected to the inner wall surface of the extrusion block (501), an air supply port (505) being provided on one side surface of the sewage pool (3), an aeration pipe (506) being fixedly connected to one side surface of the aeration bin (502), and an air supply bin (507) adapted to the air supply port (505) being provided on the outer wall of the sewage pool (3).

3. The floating sludge treatment device for a sewage treatment plant according to claim 2, characterized in that: An airway one-way valve (6) is provided on the inner wall surface of the air supply port (505), and the airway one-way valve (6) includes a valve pipe (601). A sealing ring (602) is fixedly connected to the inner wall surface of the valve pipe (601), and a sealing block (603) is attached to one side surface of the sealing ring (602). A one-way return spring (604) is fixedly connected to the side surface of the sealing block (603) away from the sealing ring (602), and a sealing base (605) is fixedly connected to the inner wall surface of the valve pipe (601).

4. The floating sludge treatment device for a sewage treatment plant according to claim 1, characterized in that: The suction shaft (7) includes a sealing sleeve (701), which is fixedly connected to the bottom surface of the floating mud scraper (402). A suction bin (702) is rotatably connected to one side surface of the sealing sleeve (701). The output shaft of the driving motor (1) is fixedly connected to the driving shaft (703). A conversion shaft (704) is fixedly connected to the lower surface of the driving shaft (703). A reciprocating rod (705) is slidably connected to one side surface of the conversion shaft (704). A water filter block (706) is fixedly connected to one side surface of the reciprocating rod (705). An adsorption block (707) is fixedly connected to the lower surface of the water filter block (706). A filter pressure block (708) is fixedly connected to the lower surface of the adsorption block (707). The inner wall surface of the water filter block (706) is fixedly connected to a mounting ring (709), the inner wall surface of the mounting ring (709) is fixedly connected to a fixed rotating shaft (710), the outer surface of the fixed rotating shaft (710) is fitted with a reset torsion spring (711), and a closing plate (712) adapted to the reset torsion spring (711) is provided on the outer wall of the fixed rotating shaft (710), a suction groove (713) is provided on the inner wall of the suction bin (702), a sealing reed (714) is fixedly connected to the outer wall of one end of the suction groove (713), a sealing groove plate (715) adapted to the suction groove (713) is fixedly connected to one side surface of the sealing reed (714), and an electric valve (716) is fixedly connected to the lower surface of the suction bin (702).

5. The floating sludge treatment device for a sewage treatment plant according to claim 1, characterized in that: The outer surface of the cleaning scraper (407) is hollowed out, and a plurality of groups of the cleaning scrapers (407) are arranged at equal intervals on the outer surface of the cleaning rod (405).

6. The floating sludge treatment device for a sewage treatment plant according to claim 1, characterized in that: The cleaning scraper (407) forms a linkage cleaning device with the air supply port (505) and the sewage pool (3) through the cleaning rod (405), the cleaning return spring (404) and the driving rod (403). The cross section of one side of the floating mud scraper (402) is in a "concave" shape.

7. The floating sludge treatment device for a sewage treatment plant according to claim 2, characterized in that: The floating mud scrapers (402) are symmetrically arranged in three groups around the central axis of the driving motor (1), and the extrusion blocks (501) are symmetrically arranged in six groups around the central axis of the driving motor (1).

8. The floating sludge treatment device for a sewage treatment plant according to claim 2, characterized in that: Aeration holes are provided on one side surface of the aeration tube (506), and a plurality of groups of the aeration tubes (506) are arranged at equal intervals on the outer surface of the aeration tube (506).

9. The floating sludge treatment device for a sewage treatment plant according to claim 3, characterized in that: The airway one-way valve (6) is arranged on the inner wall surface of the air supply port (505) and the aeration pipe (506), and the sealing block (603) is fixedly connected to the inner wall surface of the valve pipe (601) through a one-way return spring (604) and a sealing base (605).

10. The floating sludge treatment device for a sewage treatment plant according to claim 4, characterized in that: The closing plate (712) forms a one-way sealing device through a reset torsion spring (711) and a mounting ring (709). Six groups of the one-way sealing devices are symmetrically arranged around the central axis of the water filter block (706), and a drainage hole is provided on one side surface of the suction bin (702).

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